‘POLLY IDLER’ by THE VERNIER ENGINEERING GROUP
| Shaft: |
Our Vernier Shaft is a solid 32mm diameter tapered to 30mm for precise bearing fit and then 25mm shaft ends (across flats) to facilitate frame placement. Our Vernier shaft is electroplated to resist corrosion and rusty conditions. The shaft can be fitted to all standard frame configurations as well as specific non standard frames. Feature: 50% reduction in deflection (compared to the industry standard 25 mm shafts) thus the bearings life time is extended as deflection ‘wears’ any bearing. |
|
Longer bearing life time = Longer Idler life time ! |
|
| Across Flats: |
As per industry standard 18 mm (across flat) for the 127mm (5 inch) idler and 22mm for the 152 (6 inch) idler. |
| Bearings: |
Heavy duty (19 000 newton stress) 6206 2RS deep groove ball bearings with 2 rubber seals (the industry tends to use a light duty (7 000 newton) open bearing with no seals) Feature: Our 2 rubber seals provide increased protection from dusty and wet conditions thus the bearing life time is extended. Feature: Our heavy duty bearing’s impact and stress capabilities ensure extended bearing life time. |
|
Longer bearing life time = Longer Idler life time ! |
|
| Seals: |
We use 2 Labyrinth seals per side (Mk 11) for dusty and high speed conditions.Alternatively, a labyrinth and a double lip seal (Mk 10) for wet and slow conditions. (For both types plenty of grease is provided to lubricate the seals and provide additional dust trap capabilities) Feature: Out unique sealing arrangement ensures increased bearing protection from dust, water and grime. |
|
Longer bearing life time = Longer Idler life time ! |
|
|
Stone Guard: |
Provides additional protection for seals against dust and fine particles and has an additional side labyrinth seal to eject dust. |
|
End Caps: |
Injection moulded (glass-filled Nylon) with o-ring between the end-cap and shell to prevent water entry. |
|
Tube (Outer): |
Our Vernier ‘Poly’ tube consists of Ultra High Molecular Weight Polyethylene (UHMWPE) manufactured in house (Turn Key Process) with anti-static properties optional. Our tube is ‘machined’ between centers to ensure even diameter along its length. Extended bearing life is achieved because of even running. Our Vernier ‘Poly” material is suitable for underground operation according to SABS test results. A toxicity index of 2.3 resulted with a value of 3 being considered to be low toxicity. |
|
Anti Roll-back: |
Our idlers, 127 and 152 diameters, can be supplied with anti-Roll Back devises from roller brake, should the customer requires this. (It might be a legal requirement). |
Low Coefficient of friction – Our ‘Poly’ material does not react chemically with substances thus providing an extremely effective ‘non stick’ surface.
Feature: Substances (grime and dirt) does not stick to our tube (idler) thus extending idler and conveyor belt life time.
Feature: The Conveyor belt will not grip on our Poly surface (climb effect)
High Impact Resistance – Our ‘Poly’ material has an excellent resistance to impact by having ‘memory capabilities’. After impacted by ie. rock etc, our material returns to its original size and shape.
Feature: No cutting of conveyor belts and or damage to. (Blade effect)
Feature: Doubles as an ‘impact idler’ thus lower inventories are needed.
High Abrasion Resistance – Our ‘Poly’ material is extremely wear resistant (long lasting). In many cases better than steel and many times better than ‘HDPE’ (Nylons).
Feature: less wearing effect on materials it is in contact with than the “harder” plastics. The molecular structure allows foreign particles to become embedded in it and thereby reducing the wear on the contact body (Conveyor belt).
Combined Features: With the combined features of Low Friction, High Impact Resistance and excellent Abrasion Resistance, our tube (Idler Shell) guarantees a longer life time than any of the steel or HDPE (Nylon) tube idlers. We outlast any of these idler types by at least 3 to 5 times under any and all conditions!
Feature: Less expenditure on idlers due to longer life times.
Feature: Less downtime as idlers do not need be replaced as often.
Feature: Longer conveyer belt life time as our Vernier engineered ‘Poly Idler’ causes no damage to belts.
Quality Idler = Increased Profit !
VERNIER IDLERS FOR SICON TUBE/TEAR-DROP CONVEYOR
A selection of 89, 105 dia drum- and 125 dia biscuit Sicon Idlers manufactured from reprocessed UHMW-PE except the lower left 125 biscuit idler which was manufactured from virgin UHMW-PE material. Notice the 5 mm wear indicating hole in this idler.
MATERIALS:
Once again we use UHMWPE for the drum section which will be in contact with the belt. Reprocessed UHMW-PE has the unique feature that it’s properties improve with re-use.
Shaft: The shaft is produced from 26 mm 070M20 (EN3) material mm which has been machined all over. The shaft is then zinc plated.
Bearings: Two 6205 2RS Bearings.
Seals: In addition to the seals of the bearings, a double lip oil seal is installed to prevent the penetration of dust into the bearing cavity. Further, the front end has a solid face to prevent penetration of foreign particles into the bearing cavity.
Inspection hole: A hole is drilled into the drum section 5 mm from the OD so that wear can be inspected and managed.
FLEX-WALL IDLERS
Using the UHMWP-E tube we manufacture a 100 mm 1ong 128 dia idler with various stub shaft diameters/lengths to use on flex-wall/bucket conveyors. 100 mm long idlers are kept in stock but longer lengths can be accommodated.
Our Vernier Guarantee:
We at Vernier are so confident in our ‘UMWPE’ idler that we GUARANTEE our product will outlast any other by at least 3 (Three) times under similar conditions !